Acoustic Performance Partnership
Eastern Acoustic Works
KF861
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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TECHNICAL SPECIFICATIONS
KF861
DIMENSIONAL DRAWINGS
DIMENSIONAL DRAWING
ARCHITECTURAL SPECIFICATIONS
The three-way full range loudspeaker systems shall incorpo-
rate 2x 15-in LF transducers, 2x 10-in cone MF transducers
and 2x 2-in exit compression driver HF transducer.
The LF drivers shall be separated by a “tuned” distance that
uses the Tuned Dipolar Array effect to achieve optimal low
frequency pattern control. Each MF driver shall be loaded
into a midrange horn constructed of 3mm birch plywood re-
inforced with high density polyurethane foam. The MF horn
shall incorporate a phase/displacement plug. Each HF driver
shall be loaded on a constant directivity horn with a nomi-
nal coverage pattern of 90
°
(h) x30
°
(v).
System frequency response shall vary no more than
±
3 dB
from 50 Hz to 17 kHz measured on axis. The low frequency
section shall produce a Sound Pressure Level (SPL) of 102 dB
SPL on axis at 1 meter with a power input of 1 Watt, and
shall be capable of producing a peak output of 141 SPL on
axis at 1 meter. It shall handle 2000 Watts of amplifier power
(AES Standard) and shall have a nominal impedance of 4
Ohms. The midrange frequency section shall produce a Sound
Pressure Level (SPL) of 111 dB SPL on axis at 1 meter with a
power input of 1 Watt, and shall be capable of producing a
peak output of 146 SPL on axis at 1 meter. It shall handle
800 Watts of amplifier power (AES Standard) and shall have
a nominal impedance of 4 Ohms. The high frequency section
shall produce a Sound Pressure Level (SPL) of 113 dB SPL on
axis at 1 meter with a power input of 1 Watt, and shall be
capable of producing a peak output of 145 SPL on axis at 1
meter. It shall handle 400 Watts of amplifier power (AES
Standard) and shall have a nominal impedance of 5 Ohms.
The loudspeaker enclosure shall be trapezoidal in shape. It
shall be constructed of 15mm thickness void-free cross-grain-
laminated Baltic birch plywood and shall employ extensive
internal bracing. It shall be finished in black catalyzed poly-
urethane. Input connectors shall be one each male and fe-
male AP6. The enclosure shall include oval steel tubing (one
tube on each side) that accepts steel linking plates. The
plates shall attach to the steel tubing with quick-release
pins which shall be included. Sufficient precisely aligned pin
holes shall be placed in the steel tubing and linking plates
to allow for a variety of arraying angles and spacing. The
front of the loudspeaker shall be covered with a vinyl coated
perforated steel grill backed with open cell foam to protect
against dust.
The three-way full range loudspeaker shall be the EAW model
KF861.
VIEW A-A
10.81
TYP
7.69
4.25
4.32
4.30
INPUT
7.21
13.22
TYP
12.88
19.87
4.50 SQ. TYP.
BACK
44.69
FRONT
18.49
L
C
9.24
32.00
17.11
6.44
2.07 2X
SIDE
4.41
15.80
10
°
6.44 TYP
.25
72.00
33.97
TOP
( BOTTOM SEE NOTE 5)
KF861
510336
EXP 3/9/97 SHB
1. ALL DIMENSIONS IN INCHES UNLESS OTHERWISE NOTED.
2. CENTER OF GRAVITY
3. CABINET IS SYMMETRICAL ABOUT CENTER LINE DESIGNATIONS.
4. 3" FLY STRIP.
5. TOP AND BOTTOM ARE IDENTICAL EXCEPT RUNNERS PROTRUDE 1/4" ON
BOTTOM, AND RUNNER MATING CHANNELS ARE RECESSED 1/8" ON TOP.
6. BUILT-IN HANDLES (2 PLACES EACH SIDE).
7. BUILT-IN RIGGING ATTACHMENT POINTS (2 PLACES EACH SIDE).
SEE NOTE 6
SEE NOTE 7
A
A
RUNNERS, SEE NOTE 5
SERVICE ITEMS
LF: Complete Cone Dirver
EAW Part No.
804036
MF: Complete Cone Driver
EAW Part No.
804022
HF: Complete Compression Driver/Tweeter
EAW Part No.
803011
Filter/Crossover Network: Complete Assembly
EAW Part No.
201499
